Home / 7,817.92-11,726.52-2,887.20

Finding the Fourth Proportional to 7,817.92, 11,726.52 and 2,887.20

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Solution

The fourth proportional to 7,817.92, 11,726.52 and 2,887.20 is: 4,330.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.92 : 11,726.52 = 2,887.20 : x
  2. Step 2: Convert to fraction form
    7,817.92/11,726.52 = 2,887.20/x
  3. Step 3: Cross multiply
    7,817.92x = 11,726.52 × 2,887.20
  4. Step 4: Simplify right side
    7,817.92x = 33,856,808.54
  5. Step 5: Solve for x
    x = 33,856,808.54/7,817.92
  6. Step 6: Final answer
    x = 4,330.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.